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Pressure measures conversion

 Two common scales of pressure measuring persist to exist and compete. The Metric (S.I.) system and the U.S.A. and Imperial system.


Pressure measure conversion tool

Type the known value in the appropriate box,
click the button next to that box,
and the other values will be calculated.

SI (Metric)

Bar (bar)

kilopascal (kPa)

hectopascal (hPa)

millibar (mbar)

Pascal (Pa)

Atmosphere (atm)

Millimeters mercury (mm Hg)

U.S. and Imperial Pressure Measures

Pound per square foot (lb/ft2)

Pound per square inch (lb/in2 = PSI)

Inches mercury (in Hg)


The conversion factor  1 lb/in2 = 6894.757 Pa  has been used.
(use a dot ( . ) as a decimal point to convert non-integer values)


Some Important Pressure Conversion Factors


To convert from                  to                                    multiply by

pound per square foot (psf)      kilogram per square meter (kg/sq m)       4.8824

pound per square foot (psf)      pascal (Pa)                              47.88

pound per square inch (psi)      pascal (Pa)                           6,894.757

pound per square inch (psi)      megapascal (MPa)                          0.00689476




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